EIP-6963: Multi Injected Provider Discovery

import * as EIP6963 from '@voltaire/provider/eip6963';

const unsubscribe = EIP6963.subscribe((providers) => {
  console.log(`Found ${providers.length} wallets`);

  for (const { info, provider } of providers) {
    console.log(`- ${info.name} (${info.rdns})`);
  }
});

// Cleanup when done
unsubscribe();

import * as EIP6963 from '@voltaire/provider/eip6963';

// Start discovery
const unsubscribe = EIP6963.subscribe(() => {});

// Find MetaMask by reverse DNS
const metamask = EIP6963.findProvider({ rdns: 'io.metamask' });

if (metamask) {
  const accounts = await metamask.provider.request({
    method: 'eth_requestAccounts'
  });
  console.log('Connected:', accounts[0]);
}

unsubscribe();

import * as EIP6963 from '@voltaire/provider/eip6963';

// Start discovery
const unsubscribe = EIP6963.subscribe(() => {});

// Get snapshot of all providers
const providers = EIP6963.getProviders();
console.log(providers.map(p => p.info.name));

unsubscribe();

import * as EIP6963 from '@voltaire/provider/eip6963';

const unsubscribe = EIP6963.announce({
  info: {
    uuid: crypto.randomUUID(),
    name: "My Wallet",
    icon: "data:image/svg+xml;base64,PHN2Zy...",
    rdns: "com.mywallet"
  },
  provider: myEIP1193Provider
});

// On extension unload
unsubscribe();

type ProviderInfo = Readonly<{
  uuid: string;   // UUIDv4 unique to session
  name: string;   // Human-readable name
  icon: string;   // Data URI (>=96x96px)
  rdns: string;   // Reverse DNS (e.g., "io.metamask")
}>;

type ProviderDetail = Readonly<{
  info: ProviderInfo;
  provider: EIP1193Provider;
}>;

import * as EIP6963 from '@voltaire/provider/eip6963';

const info = EIP6963.ProviderInfo({
  uuid: "350670db-19fa-4704-a166-e52e178b59d2",
  name: "Example Wallet",
  icon: "data:image/svg+xml;base64,PHN2Zy...",
  rdns: "com.example.wallet"
});

console.log(Object.isFrozen(info)); // true

import * as EIP6963 from '@voltaire/provider/eip6963';

const platform = EIP6963.getPlatform();
// 'browser' | 'node' | 'bun' | 'worker' | 'unknown'

if (platform === 'browser') {
  // Safe to use EIP-6963
}

import * as EIP6963 from '@voltaire/provider/eip6963';

try {
  EIP6963.subscribe(() => {});
} catch (error) {
  if (error instanceof EIP6963.UnsupportedEnvironmentError) {
    console.log(`Not supported: ${error.platform}`);
  }
}